Weight painting using Auto Rig Pro on Blender 2.8
If I am correct, You are supposed to weight paint based on the bones that are in layer 31. It should look like this when you view it.



Artell has provided the character Mike in his manual for weight paint reference.You can check it out in here : http://lucky3d.fr/auto-rig-pro/doc/auto_rig.html#how-to-paint-the-weights

I hope this helps